mcs/class/System.Web/System.Web.UI/ControlCollection.cs

   1 //
   2 // System.Web.UI.ControlCollection.cs
   3 //
   4 // Duncan Mak  (duncan@ximian.com)
   5 //
   6 // (C) Ximian, Inc.
   7 //
   8
   9 using System;
  10 using System.Collections;
  11
  12 namespace System.Web.UI {
  13
  14         public class ControlCollection : ICollection, IEnumerable
  15         {
  16                 ArrayList list = new ArrayList ();
  17                 Control owner;
  18
  19                 public ControlCollection (Control owner)
  20                 {
  21                         if (owner == null)
  22                                 throw new ArgumentException ();
  23
  24                         this.owner = owner;
  25                 }
  26
  27                 public int Count {
  28                         get { return list.Count; }
  29                 }
  30
  31                 public bool IsReadOnly {
  32                         get { return list.IsReadOnly; }
  33                 }
  34
  35                 public bool  IsSynchronized {
  36                         get { return list.IsSynchronized; }
  37                 }
  38
  39                 public virtual Control this [int index] {
  40                         get { return list [index] as Control; }
  41                 }
  42
  43                 protected Control Owner {
  44                         get { return owner; }
  45                 }
  46
  47                 public object SyncRoot {
  48                         get { return list.SyncRoot; }
  49                 }
  50
  51                 public virtual void Add (Control child)
  52                 {
  53                         if (child == null)
  54                                 throw new ArgumentNullException ();
  55                         if (IsReadOnly)
  56                                 throw new HttpException ();
  57
  58                         list.Add (child);
  59                 }
  60
  61                 public virtual void AddAt (int index, Control child)
  62                 {
  63                         if (child == null) // maybe we should check for ! (child is Control)?
  64                                 throw new ArgumentNullException ();
  65
  66                         if ((index < 0) || (index > Count))
  67                                 throw new ArgumentOutOfRangeException ();
  68
  69                         if (IsReadOnly)
  70                                 throw new HttpException ();
  71
  72                         list [index] = child;
  73                 }
  74
  75                 public virtual void Clear ()
  76                 {
  77                         list.Clear ();
  78                 }
  79
  80                 public virtual bool Contains (Control c)
  81                 {
  82                         return list.Contains (c as object);
  83                 }
  84
  85                 public void CopyTo (Array array, int index)
  86                 {
  87                         list.CopyTo (array, index);
  88                 }
  89
  90                 public IEnumerator GetEnumerator ()
  91                 {
  92                         return list.GetEnumerator ();
  93                 }
  94
  95                 public virtual int IndexOf (Control c)
  96                 {
  97                         return list.IndexOf (c as object);
  98                 }
  99
 100                 public virtual void Remove (Control value)
 101                 {
 102                         list.Remove (value as object);
 103                 }
 104
 105                 public virtual void RemoveAt (int index)
 106                 {
 107                         if (IsReadOnly)
 108                                 throw new HttpException ();
 109
 110                         list.RemoveAt (index);
 111                 }
 112         }
 113 }